How do I find FG?Attachment 21413

Can anyone help?

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- Apr 10th 2011, 03:49 AMxeritoHow do I find sidelength FG of triangle?How do I find FG?Attachment 21413

Can anyone help? - Apr 10th 2011, 04:14 AMveileen
Indication:

Use cosine theorem (also known as generalization of the Pythagorean theorem). - Apr 10th 2011, 04:43 AMearboth